Hydrogen sulphide

Guidance on Safe Use

First-aid measures

1. Description of first aid measures

General information:

Remove contaminated soaked clothing immediately.

Adhere to personal protective measures when giving first aid.

Seek medical advice immediately.

Take away from danger area and lay down affected person.

In case of inhalation:

Remove the casualty into fresh air and keep him immobile.

In case of breathing difficulties give oxygen.

In the event of pulmonary irritation treat initially with corticoid spray, e.g. Ventolair- or Pulmicort- metered-dose

aerosol (Ventolair and Pulmicort are registrated trademarks).

Seek medical treatment immediately.

In case of respiratory standstill give artifical respiration by respiratory bag (Ambu bag) or respirator. Send for a doctor.

In case of skin contact:

In case of contact with skin wash off with warm water.

In case of frostbite spray with lukewarm (not hot) water for at least 15 minutes. Do not remove clothing frozen to the

skin. Thaw it with lukewarm water. Apply a sterile dressing. Obtain medical assistance.

Seek medical treatment immediately.

In case of eye contact:

Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Call for a doctor immediately.

In case of ingestion:

Ingestion is not considered a potential route of exposure.

2. Most important symptoms and effects, both acute and delayed

Physician's information / possible symptoms:

Respiratory tract irritation

Unconsciousness

Shortness of breath

Headache

Nausea

Tears.

Dizziness

Contact with liquid may cause cold burns/frostbite.

Physician's information / possible dangers:

Risk of respiratory disorders

Risk of cardiac rhythm disturbances

Risk of pulmonary oedema

3. Indication of any immediate medical attention and special treatment needed

Treatment (Advice to doctor)

Monitor circulation.

Fire-fighting measures

1. Extinguishing media

Suitable extinguishing media:

Dry powder

Carbon dioxide

Water spray jet

Unsuitable extinguishing media:

Full water jet

2. Special hazards arising from the substance or mixture

In case of fire formation of dangerous gases possible.

Formation of explosive gas mixtures in air.

In the event of fire the following can be released: Sulphur dioxide (SO2)

3. Advice for firefighters

Special protective equipment for fire-fighters:

Use breathing apparatus with independent air supply ( isolated ).

Wear full protective clothing.

Additional information

Cool endangered containers with water spray jet.

Exposure to fire may cause containers to rupture / explode.

Do not extinguish a leaking gas flame unless absolutely necessary. Spontaneous/explosive re-ignition may occur.

Extinguish any other fire.

Fire residues and contaminated firefighting water must be disposed of in accordance with the local regulations.

Collect contaminated firefighting water separately, must not be discharged into the drains.

Accidental release measures

1. Personal precautions, protective equipment and emergency procedures

For non-emergency personnel:

Evacuate area.

Keep people away and stay on the upwind side.

Keep away sources of ignition.

For emergency responders:

Remove persons to safety.

Keep area evacuated and free from ignition sources until any spilled liquid has evaporated. (Ground free from frost).

Personal protection by wearing close-fitting protective clothing and breathing apparatus.

Eliminate all ignition sources if safe to do so.

2. Environmental precautions

Collect contaminated water / firefighting water separately.

If possible, stop flow of product.

Do not discharge into the drains/surface waters/groundwater.

Prevent from entering sewers, basements and workpits, or any place where its accumulation can be dangerous.

If necessary, secure leaky pressure receptacles in a salvage packaging.

Suppress gases/vapours/mists with water spray jet

Do not discharge into the subsoil/soil.

3. Methods and material for containment and cleaning up

Ensure adequate air ventilation.

Allow to vaporise.

Additional Information:

No water on the leaks.

4. Reference to other sections

See safe handling and storage, disposal considerations, personal protection

Handling and storage

1. Precautions for safe handling

Advice on safe handling

Use only in thoroughly ventilated areas.

Transfer and handle only in enclosed systems.

Containers’ temperature may not be increased above 50 °C.

Do not heat with open flames.

The working pressure in the receptacle must not exceed the saturation vapour pressure of the pure product

resulting at a temperature of 50 °C.

Take measures against electrostatically charging.

Barrels and installations thoroughly earthing (grounding ).

Use antistatic tools.

Provide good room ventilation even at ground level (vapours are heavier than air).

Prevent cylinders from falling over.

Ensure valve protection device is correctly fitted.

Ensure valve outlet cap nut or plug (where provided) is correctly fitted.

Open valve slowly to avoid pressure shock.

Use only properly specified equipment which is suitable for this product, its supply pressure and temperature.

Do not allow backfeed into the container.

Suck back of water into the container must be prevented.

No water to valves, flanges and other fittings.

Purging of pipes and valves with inert gases - to avoid: water, solvents.

General protective measures:

Do not inhale gases.

Hygiene measures:

At work do not eat, drink and smoke.

Wash hands before breaks and after work.

Advice on protection against fire and explosion:

The product is combustible.

Because of risk of explosion avoid vapours getting into cellar, sewage system and holes.

Take precautionary measures against static discharges.

Formation of explosive gas mixtures in air.

Pay attention to general rules of internal fire prevention.

Use explosion-proof equipment / fittings and non-sparking tools.

2. Conditions for safe storage, including any incompatibilities

Requirements for storage rooms and vessels:

Keep in closed original container.

Ventilate store-rooms thoroughly.

Only use containers that are approved specifically for the substance/product.

Risk of hydrogen embrittlement.

Suitable materials: Normalised carbon steel, tempered alloy steel, aluminium alloys, austenitic stainless steels.

Valve: Suitable materials: Brass, copper alloys, carbon steels, aluminium alloys, austenitic stainless steels.  

Other material details see ISO 11114.

All regulations and local requirements for the storage of containers have to be respected.

Advice on storage compatibility:

Do not store together with spontaneously flammable materials.

Do not store together with combustible liquids or combustible solids.

Do not store together with animal feedstuffs.

Do not store together with explosives.

Do not store together with infectious substances.

Do not store together with radioactive material.

Do not store together with toxic liquids or toxic solids.

Do not store together with food.

Do not store together with oxidizing liquids or oxidizing solids.

Further information on storage conditions:

Ensure valve protection device is correctly fitted.

Keep container tightly closed and store at cool and aired place.

Prevent cylinders from falling over.

Storage temperature may not exceed 50°C (=122°F).

Protect from heat/overheating.

3. Specific end use(s)

Recommendation(s) for intended use

See section 13

Use as an intermediate under strictly controlled conditions.

Transport information

Land transport (UN RTDG/ADR/RID)

UN number:

1053

Shipping information

Proper shipping name and description:

HYDROGEN SULPHIDE

Language:

English

Labels:

2.3 (2.1)

SpecialProvisions

Inland waterway transport (UN RTDG/ADN(R))

UN number:

1053

Shipping information

Proper shipping name and description:

HYDROGEN SULPHIDE

Labels:

2.3 (2.1)

Remarks

Marine transport (UN RTDG/IMDG)

UN number:

1053

Shipping information

Proper shipping name and description:

HYDROGEN SULPHIDE

Chemical name:

HYDROGEN SULPHIDE

Labels:

2.3 (2.1)

Marine pollutant

Remarks

Air transport (UN RTDG/ICAO/IATA)

UN number:

1053

Shipping information

Proper shipping name and description:

HYDROGEN SULPHIDE

Chemical name:

HYDROGEN SULPHIDE

Special provisions / remarks

Remarks:

Not permitted for transport

SpecialProvisions

Exposure controls / personal protection

1. Control parameters

Ingredients with occupational exposure limits to be monitored.

2. Exposure controls

Respiratory protection

Keep self contained breathing apparatus readily available for emergency use.

Short term: filter apparatus, Filter B

Respiratory protection complying with EN 137.

Hand protection:

Leather gloves

Protective gloves complying with EN 374.

Safety gloves according EN 388

Glove material specification [make/type, thickness, permeation time/life]: CR; 0,5 mm; >= 30 min

Eye protection:

Protective goggles according to EN 166, in case of increased risk add protective face shield.

Other protection measures:

Safety shoes with steel toe.

Body covering work clothing, or chemical resistant suit at increased risk.

Appropriate engineering controls:

Transfer and handle only in enclosed systems.

Stability and reactivity

1. Reactivity

See section "Possibility of hazardous reactions".

2. Chemical stability

Stable under recommended conditions of use and storage (see section 7)

3. Possibility of hazardous reactions

May react violently with oxidants.

Reactions with acids.

Reactions with numerous chemical compounds.

May form an explosive mixture with air.

Reactions with amines.

4. Conditions to avoid

Formation of explosive gas/air mixtures.

Humidity.

Sources of ignition.

Avoid contact with open flames, glowing metal surfaces, etc..

5. Incompatible materials

Substances to avoid:

Peroxide

Oxygen

Sulphur dioxide (SO2)

Copper, brass and other copper alloys.

Acids.

Oxidants.

Amines.

Ammonia.

6. Hazardous decomposition products

Hydrogen

Thermal decomposition:

Remark: No decomposition if used as directed.

Additional information: Risk of hydrogen embrittlement.

Disposal considerations

Waste treatment methods:

Waste code No. Name of waste

16 05 04* gases in pressure containers (including halons) containing hazardous substances

Wastes marked with an asterisk are considered to be hazardous waste pursuant to Directive 2008/98/EC on hazardous waste.

Recommendations for the product:

Dispose of as hazardous waste.

Recommendations for packaging:

Transportable pressure equipment (empty, residual pressure): Return to supplier / manufacturer.